TurnKey LXC Appliances is an open-source project that provides a collection of free, ready-to-use virtual appliances and installation images for various software applications and services. These appliances are pre-configured and come with all the necessary software and settings to simplify deployment and management. The goal of TurnKey Linux is to make it easier for users to set up and run popular software applications without the need for extensive manual configuration.

Trilium Notes is the latest and officially maintained version of the powerful, self-hosted note-taking and personal knowledge management application. It enables users to organize information in a hierarchical tree structure and supports rich text editing, internal linking, images, attachments, and powerful scripting capabilities. This version reflects the most current development efforts under the TriliumNext organization and replaces all prior forks or legacy variants. Trilium is ideal for building personal wikis, structured documentation, and long-term knowledge archives, giving users full local control and privacy.

Traccar is an open source GPS tracking system. It supports more than 200 GPS protocols and more than 2000 models of GPS tracking devices.

Tdarr is a media transcoding application designed to automate the transcode and remux management of a media library. It uses conditional-based processing to determine the required encoding and remux operations for each file in the library. The software integrates with popular media management tools, such as Sonarr and Radarr, to ensure that newly added media files are automatically processed and optimized for the user's desired playback device. Tdarr provides a web-based interface for monitoring and managing the transcoding process, and also supports real-time logging and reporting. The software is designed to be flexible and configurable, with a wide range of encoding and remux options available to users. Tdarr is an ideal solution for media enthusiasts who want to optimize their library for seamless playback on a variety of devices, while also streamlining the management and maintenance of their media library.

Tautulli allows you to monitor and track your Plex Media Server usage, such as viewing statistics and analysis of your media library. It can be used to monitor user activity, get notifications about new media added to your library, and even generate reports on your media usage.

TasmoAdmin is an administrative platform for devices flashed with Tasmota.

Tandoor Recipes is an application for managing recipes, planning meals, building shopping lists and much much more!

Syncthing is an open-source file syncing tool that allows users to keep their files in sync across multiple devices by using peer-to-peer synchronization. It doesn't rely on any central server, so all data transfers are directly between devices.

Stirling-PDF is a powerful locally hosted web based PDF manipulation tool that allows you to perform various operations on PDF files, such as splitting merging, converting, reorganizing, adding images, rotating, compressing, and more.

Sonarr is a personal video recorder (PVR) software designed for Usenet and BitTorrent users. It allows users to manage and organize their TV show collection with ease. Sonarr integrates with popular Usenet and BitTorrent clients, such as NZBget and Transmission, to automate the downloading and organizing of TV show files. The software provides a web-based interface for managing and organizing TV shows, making it easy to search and find titles, seasons, and episodes. Sonarr also supports metadata management, including TV show posters and information, making it easy for users to keep their TV show collection organized and up-to-date. The software is designed to be easy to use and provides a simple and intuitive interface for managing and organizing TV show collections, making it a valuable tool for TV show enthusiasts who want to keep their collection organized and up-to-date. With Sonarr, users can enjoy their TV show collection from anywhere, making it a powerful tool for managing and sharing TV show files.